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| author | Sudeep Holla <sudeep.holla@arm.com> | 2017-06-18 10:38:11 +0200 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2018-02-28 17:37:57 +0100 |
| commit | 99d6bdf3387734d75e3e34e94a58b8a355b7a9c8 (patch) | |
| tree | 5a63bc4ee47cd2f32ad4bdb1eba3091febff4b21 /drivers/cpufreq/Kconfig.arm | |
| parent | hwmon: add support for sensors exported via ARM SCMI (diff) | |
| download | linux-99d6bdf3387734d75e3e34e94a58b8a355b7a9c8.tar.xz linux-99d6bdf3387734d75e3e34e94a58b8a355b7a9c8.zip | |
cpufreq: add support for CPU DVFS based on SCMI message protocol
On some ARM based systems, a separate Cortex-M based System Control
Processor(SCP) provides the overall power, clock, reset and system
control including CPU DVFS. SCMI Message Protocol is used to
communicate with the SCP.
This patch adds a cpufreq driver for such systems using SCMI interface
to drive CPU DVFS.
Cc: linux-pm@vger.kernel.org
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/cpufreq/Kconfig.arm')
| -rw-r--r-- | drivers/cpufreq/Kconfig.arm | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 3a88e33b0cfe..2e49673a9e21 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -238,6 +238,17 @@ config ARM_SA1100_CPUFREQ config ARM_SA1110_CPUFREQ bool +config ARM_SCMI_CPUFREQ + tristate "SCMI based CPUfreq driver" + depends on ARM_SCMI_PROTOCOL || COMPILE_TEST + select PM_OPP + help + This adds the CPUfreq driver support for ARM platforms using SCMI + protocol for CPU power management. + + This driver uses SCMI Message Protocol driver to interact with the + firmware providing the CPU DVFS functionality. + config ARM_SPEAR_CPUFREQ bool "SPEAr CPUFreq support" depends on PLAT_SPEAR |